The study of typhoon wind model based on the radii of wind circle

本文对应用比较广泛的几种台风风场模型进行了分析比较，将这几种台风风场模型计算的10级风圈半径、7级风圈半径与气象部门的发布值进行比较，发现均存在较大的误差，其中10级风圈半径最大绝对误差达到351km，7级风圈半径最大绝对误差达到1161km。鉴于此，本文提出一种基于最大风速半径、10级风圈半径、7级风圈半径的台风风场模型，该模型在台风内域分两段描述，在台风外域分三段描述。新模型的10级风圈半径和7级风圈半径与气象部门的发布值是一致的，风速分布相比其他几种模型的风速分布更接近实况。 同时，为了进一步验证新台风风场模型的适用性，本文建立了宁波近海风暴潮数值模型，并选取对宁波市影响较大的0509...In this paper, we compared several kinds of typhoon wind field models which are widely used, the radii of level ten and level seven wind speed calculated by these models are compared with the value released by the meteorological department, found that the errors are relatively large, the maximum absolute error of the radius of level ten wind speed is 351 km, and the maximum absolute error of the r...学位：理学硕士院系专业：海洋与环境学院海洋学系_物理海洋学学号：2242010115135

Typhoon Wind Field Model Based on the Radii of Wind Circle

首先用JElESnIAnSkI台风风场模型及美国联合台风警报中心(JTWC)整编的台风资料,计算10级和7级风圈半径,并与气象部门的发布值相比,发现两者存在较大误差.进而,在JElESnIAnSkI台风风场模型的基础上,提出一种基于最大风速半径、10级和7级风圈半径的台风风场模型,并比较两种台风风场模型的风速剖面.结果表明:该模型比包括被广泛应用的JElESnIAnSkI台风风场模型在内的前人提出的台风风场模型都更接近台风风场实况,其中10级和7级风圈半径与气象部门的发布值是一致的.The wind radii of level ten and level seven were calculated by Jelesnianski typhoon wind field model with typhoon data from Joint Typhoon Warning Center(JTWC).The error was considerable when compared to the release value of meteorological department.Thus a new typhoon wind filed model,which was based on the radii of maximum、level ten and level seven wind speed was proposed referring to Jelesnianski model.Then the wind profiles of the two models were compared.The result showed that the typhoon wind field calculated by the new model was more closer to reality than by any other models include the Jelesnianski model,which was popular used.And the wind radii of level ten and level seven in the new model were the same to the release value of meteorological department.海洋公益性行业科研专项(200905013-7

The Simulation of Typhoon Waves in Taiwan Strait

采用第3代海浪模式SWAn(SIMulATIOn WAVES nEArSHOrE),在考虑了波浪折射、底摩擦、破碎、白浪、风能输入、非线性波波相互作用等物理过程的基础上,分别应用JElESnIAnSkI模型风场、藤田气压公式计算的梯度风场以及考虑台湾海峡和台湾岛地形影响的台风风场(陈德文台风风场)模型,数值模拟了0813号“森拉克“、0815号“蔷薇“和0908号“莫拉克“3场台风过程在台湾海峡产生的台风浪,并与浮标观测结果对比.结果表明,陈德文台风风场模型数值模拟的台风浪结果与实测符合较好,其中模拟结果的有效波高平均绝对误差为0.55M,有效波高峰值平均绝对误差为0.19M,说明其对台风浪的模拟尤其是灾害性台风浪的模拟是成功的.The third generation wave model SWAN(simulation waves nearshore)was applied to simulate the typhoon waves in Taiwan Strait,during the 0813 "Sinlaku",the 0815 "Jangmi",and the 0908 " Morakot".The model considered wave refraction,bottom friction,wave breaking,whitecapping,wind input,and nonlinear wave-wave interactions.Three kinds of wind models,Jelesnianski wind model,Fujita wind model,and the wind model that considered the Taiwan Strait and Taiwan′s topographic effects(Chen De Wen typhoon wind model),were adopted to derive the input wind velocities for SWAN wave model respectively.Compared with the buoy data,the significant wave height driven by Chen typhoon wind model showed relatively high consistence,with the mean absolute error of significant wave height and the peak significant wave height of 0.55mand 0.19mrespectively.This indicated that the simulation of typhoon waves in this study was successful.海洋公益性行业科研专项(200905013-7